To put the fires out to save the civilians in level 1 of LEGO Marvel Super Heroes 2 use Star-Lord to fly up to the top of the ladder and stand on the button to lower the ladder and let your companions up:

To put the fires out to save the civilians use Star-Lord to fly up to the top of the ladder and stand on the button.

Switch to Drax and punch the glowing red door:

To put the fires out to save the civilians use Drax to punch the glowing red door.

Go into the room and pull the lever. This will release a fire extinguishing drone that will take care of the fires.